Requesting Advice =) re: supplements/nutrition/workout

Me
I'm 150lbs, 20 yo, never was a serious bodybuilder until a few months ago. I've been an avid runner/aerobics obsessor for 3 years, but never did weights until we got some free workout equipment + bowflex a couple months ago.

Exercise
So I've been working out for 2-3 months now and I've seen DRAMATIC changes in my physique from working out 6 days a week. I have 2 seperate arm days and 1 leg day. Repeat, then 1 day break, with 40 minutes of aerobic exercise on every workout day..

PrimaForce Yohimbine 2.5 - Before aerobic workouts on days I don't have classes. (2-3 times a week)

Nutrition
Not completely strict...

Breakfast
-Eggs or just Yogurt
-Huge glass of waterLunch
-Chicken or Eggs if I didn't eat them at breakfast
-Huge glass of Skim MilkDinner
-Oatmeal/Sandwhich w/Chicken
-Huge glass of Skim MilkSnacks periodically throughout the day
-Clif Bars before/after workouts or during class
-Handful of almonds/nuts
-Yogurts
-Chicken Noodle Soup
-Peanut butter jelly on wholegrain bread
Usually have 2-3 of those things a day.

Advice Request
So re: supplements, I'm going to be running out of my first bottle of recreate and I want to drop the yohimbine d/t anxiety increase. And I obviously need some new introduction to nutrition. Don't know what to add supplement wise when I drop those two things. Then really all I'll be on is prime.

Just looking for some all around advice. I've never been a bodybuilder/weightlifter. After roaming this forum for the past couple of months I think I have some good staples down, but always looking for improvement.

Goals
Trying to drop maybe like 2 more lbs of bodyfat around trouble areas, but other than I'm like a size 30 waist (with a belt...) so I'm pretty thin, just some stubborn fat. Then I'm going to try and get bigger both mass/muscle wise.